d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <syslog.h>
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#include <ctype.h>
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#include "libbb.h"
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#ifdef CONFIG_SELINUX
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#include <selinux/selinux.h> /* for setexeccon */
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#endif
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#ifdef CONFIG_SELINUX
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static security_context_t current_sid=NULL;
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void
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renew_current_security_context(void)
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{
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if (current_sid)
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freecon(current_sid); /* Release old context */
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getcon(¤t_sid); /* update */
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return;
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}
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void
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set_current_security_context(security_context_t sid)
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{
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if (current_sid)
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freecon(current_sid); /* Release old context */
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current_sid=sid;
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return;
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}
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#endif
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/* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
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If COMMAND is nonzero, pass it to the shell with the -c option.
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If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
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arguments. */
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void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args)
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{
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const char **args;
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int argno = 1;
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int additional_args_cnt = 0;
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for ( args = additional_args; args && *args; args++ )
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additional_args_cnt++;
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args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt ));
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args [0] = bb_get_last_path_component ( xstrdup ( shell ));
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if ( loginshell )
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args [0] = xasprintf ("-%s", args [0]);
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if ( command ) {
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args [argno++] = "-c";
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args [argno++] = command;
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}
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if ( additional_args ) {
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for ( ; *additional_args; ++additional_args )
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args [argno++] = *additional_args;
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}
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args [argno] = 0;
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#ifdef CONFIG_SELINUX
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if ( (current_sid) && (!setexeccon(current_sid)) ) {
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freecon(current_sid);
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execve(shell, (char **) args, environ);
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} else
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#endif
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execv ( shell, (char **) args );
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bb_perror_msg_and_die ( "cannot run %s", shell );
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}
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